AMÉRICA MÓVIL, S.A.B. DE C.V. (Exact Name of the Registrant As Specified in the Charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

FORM 6-K

REPORT OF A FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of February 2021

Commission File Number: 1-16269

AMÉRICA MÓVIL, S.A.B. DE C.V. (Exact Name of the Registrant as Specified in the Charter)

America Mobile (Translation of Registrant’s Name into English)

Lago Zurich 245 Plaza Carso / Edificio Telcel, Piso 16 Colonia Ampliación Granada, Miguel Hidalgo 11529 Mexico City, Mexico (Address of Principal Executive Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

América Móvil’s fourth quarter of 2020 financial and operating report

Mexico City, February 9th, 2021 - América Móvil, S.A.B. de C.V. (“América Móvil”) [BMV: AMX] [NYSE: AMX, AMOV], announced today its financial and operating results for the fourth quarter of 2020.

● We added 6.8 million wireless subscribers in the quarter, twice as many as in the precedent quarter. They included 2.7 million mobile postpaid subscribers of which almost two millon subs came from Brazil, 223 thousand from Peru and 201 thousand from Colombia. In the prepaid segment we gained 4.0 million clients, with Brazil and Mexico adding 1.2 million subs each.

● Fixed-broadband is still the main driver on the fixed-line platform: we connected 208 thousand new accesses, a 5.4% increase of our installed base.

● Fourth quarter revenues of 255 billion pesos were down 3.1% in Mexican peso terms from the year-earlier quarter with equipment revenues falling 9.4% and service revenues that were almost flat from a year before. However, service revenues expanded 2.2% year-on-year at constant exchange rates driven by postpaid revenues, up 6.3% and fixed-broadband revenues that rose 8.4%.

● EBITDA of 82.9 billion pesos was up 1.3% in Mexican peso terms; at constant exchange rates it increased 5.3%. Correcting for a one-off effect booked in the fourth quarter of 2019 concerning the restructuring of certain lease agreements, consolidated EBITDA would have increased 7.6% at constant exchange rates. Our EBITDA margin stood at 32.5%, up 1.4 percentage points from a year before.

● Our 40.4 billion pesos operating profit and 15.4 billion pesos in comprehensive financing income resulted in a net profit of 37.3 billion pesos in the quarter, 79.6% higher than in the year-earlier quarter.

● Our cash flow enabled us to cover capital expenditures of 129.6 billion pesos, shareholder distributions of 14.7 billion pesos, pension and other labor-related liabilities in the amount of 18.2 billion pesos and to reduce our net debt by 64.9 billion pesos throughout the year.

● At the end of December our net debt stood at 647 billion pesos, equivalent to 1.93 times EBITDA under IAS 17.

We will host our conference call to discuss 4Q20 financial and operating results on February 10th at 9:00 am Mexico City time. To access the call please log on to www.americamovil.com/investors América Móvil’s Fundamentals

4Q20 4Q19

Earnings per Share (Mex$)(1) 0.56 0.31

Earning per ADR (US$)(2) 0.54 0.33

EBITDA per Share (Mex$)(3) 1.24 1.24

EBITDA per ADR (US$) 1.20 1.28

Net Income (millions of Mex$) 37,312 20,774

Average Shares Outstanding (billion) 66.73 66.01

(1) Net Income I Average Shares Outstanding (2) 20 shares per ADR (3) EBlTDA I Average Shares Outstanding

América Móvil’s Subsidiaries as of December 2020

Equity Country Brand Business Participation

Mexico Telcel wireless 100.0%

Telmex wireline 98.8%

Sección Amarilla other 100.0%

Telvista other 90.0%

Argentina Claro wireless 100.0%

Telmex wireline 100.0%

Brazil Claro wireless/wireline 99.6%

Chile Claro wireless 100.0%

Telmex wireline 100.0%

Colombia Claro wireless/wireline 99.4%

Costa Rica Claro wireless 100.0%

Dominicana Claro wireless/wireline 100.0%

Ecuador Claro wireless/wireline 100.0%

El Salvador Claro wireless/wireline 95.8%

Guatemala Claro wireless/wireline 99.3%

Honduras Claro wireless/wireline 100.0%

Nicaragua Claro wireless/wireline 99.6%

Panama Claro wireless/wireline 100.0%

Paraguay Claro wireless/wireline 100.0%

Peru Claro wireless/wireline 100.0%

Puerto Rico Claro wireless/wireline 100.0%

Uruguay Claro wireless/wireline 100.0%

USA Tracfone wireless 100.0%

Netherlands KPN wireless/wireline 19.7%

Austria Telekom Austria wireless/wireline 51.0%

The reported figures for Argentina corresponding to the fourth quarter of 2020 are presented in accordance with a) IAS29 reflecting the effects of the adoption of inflationary accounting that became mandatory after the Argentinean economy was deemed to be hyperinflationary in the third quarter of 2018 and b) IAS21 translated to Mexican pesos using the end-of-period exchange rate.

All comparisons at constant exchange rates for America Movil’s consolidated figures will exclude Argentina to ensure consistency. Relevant Events

In December we received a resolution issued by the Federal Telecommunications Institute (IFT) on its evaluation of the asymmetrical regulations imposed on March 2014 to Telcel and Telmex, as preponderant agents. In general terms, for fixed services, it resolved: (i) the use of a long-run average incremental costs model to determine the local loop indirect access services rates, and that IFT may determine competitive geographic zones where such rates will be determined by Telmex; (ii) for dedicated-link leasing services, the IFT may determine competitive geographic zones where rates will be determined pursuant to a price cap methodology and (iii) certain operative and informational modifications to the electronic management system. In the mobile segment, the main additions and modifications are related to: (i) detail of information required for rate economic replicability analysis and (ii) rules applicable to purchase of handsets in installments by Telcel’s end users. The resolution will be challenged in accordance with applicable law.

On December 14th we informed that the offer submitted by our Brazilian subsidiary, Claro, jointly with Telefónica Brasil and TIM for the acquisition of the mobile business owned by Oi Group was accepted. The offer is in the amount of R$16.5 billion, of which Claro will pay 22%. In consideration of such amount, Claro will receive 32% of Oi Group’s mobile business customer base and approximately 4.7 thousand mobile access sites. The closing of the transaction is subject to customary conditions including regulatory approvals from Anatel and Conselho Administrativo de Defesa Econômica, CADE.

On this date, our Board of Directors approved a plan to spin-off our towers from América Móvil in Latin America. This spin-off will maximize the value of the infrastructure by becoming an independent entity entirely focused on development, construction and co-location of towers for wireless services. We expect to complete the reorganization of assets in 2021. Access Lines

In light of greater observed and expected COVID contagion rates some countries imposed new confinement measures in various cities in December. Nonetheless, trends for the quarter generally show good results in terms of mobile net additions overall.

After net additions of 6.8 million in the quarter—twice as many as in the precedent quarter—we finished the year with 287 million wireless subscribers. Net additions included 2.7 million postpaid subscribers and 4.0 million prepaids. Brazil led the way in terms of postpaid growth after adding almost two million subs, followed by Peru with 223 thousand and Colombia with 201 thousand; our postpaid base was up 10.1% year-on-year to 98 million subs. Mexico and Brazil added 1.2 million prepaid subs each and Colombia 784 thousand.

On the fixed-line platform we connected 208 thousand broadband accesses, almost half of them in Colombia, bringing the total to 29.8 million, 5.4% more than a year before. Pay TV units and fixed voice lines were down -3.8% and -4.0%, respectively. We ended December with 81 million fixed-line RGUs.

Wireless Subscribers as of December 2020 Total(1) (Thousands)

Country Dec ’20 Sep ’20 Var.% Dec ’19 Var.%

Argentina, Paraguay and Uruguay 24,234 23,996 1.0% 24,634 -1.6%

Austria & CEE 21,864 21,609 1.2% 21,296 2.7%

Brazil 63,140 60,005 5.2% 54,488 15.9%

Central America 15,044 14,533 3.5% 15,488 -2.9%

Caribbean 6,422 6,237 3.0% 6,244 2.9%

Chile 6,435 6,505 -1.1% 6,873 -6.4%

Colombia 33,009 32,024 3.1% 31,104 6.1%

Ecuador 7,929 7,822 1.4% 8,493 -6.6%

Mexico 77,789 76,563 1.6% 76,918 1.1%

Peru 10,948 10,552 3.8% 11,611 -5.7%

USA 20,682 20,876 -0.9% 20,876 -0.9%

Total Wireless Lines 287,497 280,722 2.4% 278,027 3.4%

(1) Includes total subscribers of all companies in which América Móvil holds an economic interest; does not consider the date in which the companies started being consolidated. Fixed-Line and Other Accesses (RGUs) as of December 2020 Total(1) Thousands

Country Dec ’20 Sep ’20 Var.% Dec ’19 Var.%

Argentina, Paraguay and Uruguay 1,459 1,385 5.3% 1,114 30.9%

Austria & CEE 6,050 6,066 -0.3% 6,143 -1.5%

Brazil 32,648 32,952 -0.9% 34,048 -4.1%

Central America 4,247 4,227 0.5% 4,409 -3.7%

Caribbean 2,558 2,532 1.0% 2,528 1.2%

Chile 1,377 1,391 -1.0% 1,400 -1.6%

Colombia 8,318 8,155 2.0% 7,613 9.3%

Ecuador 420 446 -6.0% 446 -5.8%

Mexico 21,925 22,011 -0.4% 21,992 -0.3%

Peru 1,739 1,787 -2.7% 1,603 8.5%

Total RGUs - - 80,740 80,953 0.3% 81,297 0.7%

(1) Fixed Line, Broadband and Television (Cable & DTH). Central America figures have been adjusted in accordance with the methodology used for all AMX operations. América Móvil Consolidated Results

Going into the fourth quarter the economic recovery already underway appeared to be picking up speed throughout most of our region of operations, with confidence levels shooting up in November following the U.S. presidential election and, shortly thereafter, the announcements of the approval of vaccines meant to ward off the COVID-19 virus. In this context the Latin American currencies, which had depreciated sharply against the U.S. dollar as the pandemic began, strengthened notably, with the Mexican, Colombian and Chilean pesos rising approximately 10% vs. the dollar during the quarter. Other currencies did as well, including the euro and the Brazilian real, that appreciated 4.0% and 7.9%, respectively.

Fourth quarter revenues, 255 billion pesos were down 3.1% in nominal peso terms, with service revenues declining -0.3%. At constant exchange rates, service revenues actually increased 2.2%, faster than in the preceding quarter when they had risen 1.5%. The difference between the nominal peso increases and those at constant exchange rates have mostly to do with the Mexican peso having appreciated vs. most Latin American currencies, especially against the Brazilian real (22.9%)—which reduced the peso value of real-denominated revenues. This effect more than offset the impact on our peso revenues of the depreciation of the Mexican peso vis-à-vis the U.S. dollar and the euro, 6.2% and 13.0%, respectively.

The expansion of service revenues was driven by that of mobile service revenues, which accelerated to 4.1% from 3.5% the prior quarter. For their part, fixed-line service revenues declined slightly, -0.9%, in what was their best performance in nearly a year.

Mobile postpaid revenues continued to be our top line item increasing 6.3%, up from 4.7% the prior quarter, with Austria, Puerto Rico, Peru, Brazil and Mexico all showing sequential improvements. Prepaid revenues decelerated slightly, from 2.5% in the third quarter to 2.3% in the fourth one.

Our second most important revenue line, fixed-broadband services, continued to perform well, expanding 8.4% in the quarter, slightly less than the 9.1% pace observed the prior quarter, as revenues decelerated in Mexico, Ecuador and Chile. PayTV revenues continued to decline, although less rapidly— -7.5% compared to -9.2% the prior quarter—reflecting improvements in Colombia, Austria and Chile. EBITDA came in at 82.9 billion pesos. It was up 1.3% in Mexican peso terms and 5.3% at constant exchange rates, with the EBITDA margin expanding 1.4 percentage points to 32.5%. Most countries registered stronger EBITDA growth; in the case of Mexico, EBITDA declined 5.2% largely reflecting the impact of a one-off effect booked in the fourth quarter of 2019 concerning the restructuring of certain lease agreements. Correcting for this effect, consolidated EBITDA would have increased 7.6% at constant exchange rates.

América Móvil’s Income Statement Millions of Mexican pesos

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Service Revenues 206,739 207,296 -0.3% 851,822 824,933 3.3%

Equipment Revenues 46,212 50,980 -9.4% 159,026 172,983 -8.1%

Total Revenues* 255,029 263,141 -3.1% 1,016,887 1,007,348 0.9%

Cost of Service 73,353 74,101 -1.0% 302,881 297,193 1.9%

Cost of Equipment 48,039 50,969 -5.7% 167,546 174,544 -4.0%

Selling, General & Administrative Expenses 49,340 54,346 -9.2% 212,136 215,994 -1.8%

Others 1,436 1,923 -25.3% 4,725 5,862 -19.4%

Total Costs and Expenses 172,168 181,340 -5.1% 687,288 693,592 -0.9%

EBITDA 82,862 81,801 1.3% 329,599 313,756 5.0%

% of Total Revenues 32.5% 31.1% 32.4% 31.1%

Depreciation & Amortization 42,433 37,506 13.1% 164,244 158,915 3.4%

EBIT 40,429 44,295 -8.7% 165,355 154,841 6.8%

% of Total Revenues 15.9% 16.8% 16.3% 15.4%

Net Interest Expense 6,950 5,297 31.2% 33,600 31,627 6.2%

Other Financial Expenses - 13,890 4,528 206.8% -1,291 7,075 118.2%

Foreign Exchange Loss -36,244 -1,687 n.m. 65,366 -5,226 n.m.

Comprehensive Financing Cost (Income) - -15,404 8,138 289.3% 97,675 33,476 191.8%

Income & Deferred Taxes 18,062 15,317 17.9% 16,366 51,034 -67.9%

Net Income before Minority Interest and Equity Participation in Results of Affiliates 37,772 20,840 81.3% 51,314 70,331 -27.0%

Equity Participation in Results of Affiliates -4 -24 85.1% -287 -18 n.m.

Minority Interest -456 -41 n.m. -4,174 -2,583 -61.6%

Net Income 37,312 20,774 79.6% 46,853 67,731 -30.8%

*Total revenues include Other Revenues. n.m. Not meaningful. Our operating profit was down 8.7% in peso terms to 40.4 billion pesos, as we increased charges for depreciation and amortization by 13.1%, having accelerated those associated with the Nextel operation we acquired in Brazil the year before.

In the fourth quarter we obtained a net financing income in the amount of 15.4 billion pesos stemming from foreign exchange gains of 36.2 billion pesos as the Mexican peso strengthened relative to the U.S. dollar and the euro. This helped bring about a net profit of 37.3 billion pesos, 79.6% higher than that of the year-earlier quarter. It was equivalent to 56 peso cents per share and 54 dollar cents per ADR.

Our operating cash flow allowed us to fund capital expenditures in the amount of 129.6 billion pesos, to cover 14.7 billion pesos of shareholders distributions and 18.2 billion pesos of pension and other labor-related liabilities, and to reduce our net debt by 64.9 billion pesos. Our net debt ended December at 647 billion pesos including capitalized lease obligations. It was equivalent to 1.93 times LTM EBITDA.

Balance Sheet - América Móvil Consolidated Millions of Mexican Pesos Dec ‘20 Dec ‘19 Var.% Dec ‘20 Dec ‘19 Var.% Current Assets Current Liabilities Cash, Marketable Securities & Other Short Term Ivestments 90,554 67,464 34.2% Short Term Debt* 148,083 129,172 14.6% Accounts Receivable 217,688 211,532 2.9% Lease-Related Debt 25,068 25,895 -3.2% Other Current Assets - 10,385 10,747 -3.4% Accounts Payable 225,995 268,484 15.8% Inventories 30,377 41,102 -26.1% Other Current Liabilities 96,946 101,849 -4.8% 349,005 330,844 5.5% 496,092 525,400 -5.6%

Non Current Assets Non Current Liabilities Plant & Equipment, gross 1,315,091 1,319,588 -0.3% Long Term Debt 480,300 495,082 -3.0% -Depreciation - 699,314 680,244 2.8% Lease-Related Debt 84,259 94,702 11.0% Plant & Equipment, net 615,777 639,343 -3.7% Other Liabilities 208,138 189,843 9.6% Rights of Use 101,977 118,003 -13.6% 772,697 779,627 -0.9% Investments in Affiliates 1,830 2,474 -26.0%

Deferred Assets Goodwill (Net) 143,053 152,900 -6.4% Intangible Assets 133,457 125,169 6.6% Shareholder’s Equity 237,888 226,907 4.8% Deferred Assets 161,579 163,199 -1.0%

Total Assets 1,506,677 1,531,934 -1.6% Total Liabilities and Equity 1,506,677 1,531,934 -1.6%

*Includes current portion of Long Term Debt. Financial Debt of América Móvil* Millions

Dec -20 Dec -19

Peso - denominated debt (MxP) 78,383 80,129

Bonds 51,283 58,129

Banks and others 27,100 22,000

U.S. Dollar - denominated debt (USD) 9,351 9,472

Bonds 9,351 8,975

Banks and others 0 497

Euro - denominated Debt (EUR) 9,780 11,165

Bonds 8,100 10,942

Commercial Paper 1,680 123

Banks and others 0 100

Sterling - denominated Debt (GBP) 2,200 2,750

Bonds 2,200 2,750

Reais - denominated Debt (BRL) 8,475 7,475

Bonds 8,475 7,475

Banks and others 0 0

Debt denominated in other currencies(1) (MxP) 32,610 26,045

Bonds 6,590 5,818

Banks and others 26,020 20,227

Total Debt (MxP) 628,383 624,254

Cash, Marketable Securities and Short Term Financial Investments (MxP) 90,554 67,464

Net Debt (MxP) 537,829 556,790

*This table does not include the effect of forwards and derivatives used to hedge our foreign exchange exposure. It includes financial debt of Telekom Austria. (1) Includes Peruvian soles and Chilean pesos. Mexico

In the fourth quarter we gained 1.2 million subscribers, practically all of them prepaid, to finish the year with 77.8 million subscribers. Our postpaid base increased 1.3% year-on-year whereas our prepaid base was up 1.1%. On the fixed-line platform we added 32 thousand broadband accesses and disconnected 119 thousand land-lines.

Revenues totaled 74.6 billion pesos. They were down 8.7% from the year before on account of reductions in equipment revenues, -16.9%, and a one-off revenue item booked under other revenues in the fourth quarter of 2019. Service revenues were practically flat year-on-year, -0.4%, as wireless service revenues increased 0.8% and fixed-line service revenues dropped -2.5%. Both postpaid and prepaid mobile revenues expanded slightly faster than they had the preceding quarter. At 154 pesos, wireless ARPU has practically recovered to pre-Covid levels.

EBITDA totaled 28.6 billion pesos, down 5.2% from the year-earlier quarter reflecting for the most part the extraordinary item mentioned above. Correcting for this effect, EBITDA would have increased 0.4%.

In the midst of the sanitary crisis, Telcel has prioritized continuity of service without compromising quality or speed. We have enhanced digital channels for customer care, sales and billing while at the same time made important efforts to keep traditional means of customer service for those who need them. We maintained a positive balance from Mobile Number Portability through 2020.

With its solid infrastructure and cybersecurity capabilities, Telmex has developed a portfolio of integrated IT solutions for its corporate clients based on Cloud and managed networks with top certifications for our data centers and cybersecurity. We have enabled small and medium enterprises to improve their productivity and remain efficient, operating in a safe digital environment that meets the actual needs of remote work. Telmex has been an important catalyst for digital transformation of Mexico. INCOME STATEMENT - Mexico Millions of MxP

4Q20 4Q19(1) Var.% Jan-Dec 20 Jan-Dec 19(1) Var.%

Total Revenues* 74,573 81,710 -8.7% 283,827 295,183 -3.8%

Total Service Revenues 54,307 54,508 -0.4% 213,818 212,062 0.8%

Total Equipment Revenues 19,814 23,829 -16.9% 67,998 77,821 -12.6%

Wireless Revenues 55,084 58,382 -5.6% 205,606 210,319 -2.2%

Service Revenues 35,395 35,110 0.8% 138,182 135,573 1.9%

Equipment Revenues 19,689 23,272 -15.4% 67,424 74,746 -9.8%

Fixed Line Revenues 19,037 19,955 -4.6% 76,210 79,564 -4.2%

Service Revenues 18,912 19,398 -2.5% 75,636 76,489 -1.1%

Equipment Revenues 125 557 -77.7% 574 3,075 -81.3%

EBITDA 28,575 30,149 -5.2% 108,292 109,369 -1.0%

% total revenues 38.3% 36.9% 38.2% 37.1%

EBIT 21,343 23,243 -8.2% 77,854 76,251 2.1%

% 28.6% 28.4% 27.4% 25.8%

*Revenues reflect eliminations derived from both the overlap of fixed and mobile operations as well as international intercompany transactions. Total revenues include other income. (1) 2019 reflects reclassifications of “other revenues”.

Mexico Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 77,789 76,918 1.1%

Postpaid 14,537 14,350 1.3%

Prepaid 63,253 62,569 1.1%

MOU 558 535 4.3%

ARPU (MxP) 154 154 -0.2%

Churn (%) 3.6% 4.4% (0.8)

Revenue Generating Units (RGUs)* 21,925 21,992 -0.3%

Fixed Lines 11,914 12,299 -3.1%

Broadband 10,011 9,693 3.3%

*Fixed Line and Broadband.

Argentina

For comparison purposes all comments in this section related to annual variations of the presented period for Argentina refer to figures in constant peso terms, that is, adjusted for inflation in accordance to NIC 29. Information for Uruguay and Paraguay is not presented in the table.

Fourth quarter net additions came in at 200 thousand, including 36 thousand postpaid adds and 164 thousand prepaids to finish the year with over 21 million wireless subs. On the fixed-line segment RGUs expanded by 47.3% after additions of 82 thousand accesses. We were able to grow our broadband base as we expanded our fiber footprint, connecting 39 thousand new accesses in the quarter. Fourth quarter revenues, 30.3 billion Argentinean pesos, were 9.8% lower in real terms—after inflation—than a year before with service revenues down 12.4% as wireless service revenues dropped 14.7% and fixed-line service revenues rose 6.1%. The latter increase came on the back of a 34.8% jump in broadband revenues and a 29.4% rise in PayTV revenues.

The quarter’s EBITDA, 11.7 billion Argentinean pesos, was down 15.0% in real terms as we could not offset the increases in inflation-linked costs such as salaries and the dollar-denominated expenses. The EBITDA margin for the period stood at 38.5%.

INCOME STATEMENT - Argentina Millions of Constant ARS of December 2020

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Total Revenues* 30,283 33,591 -9.8% 123,628 136,408 -9.4%

Total Service Revenues 23,218 26,513 -12.4% 101,670 109,949 -7.5%

Wireless Revenues 26,879 30,444 -11.7% 110,752 125,138 -11.5%

Service Revenues 20,111 23,583 -14.7% 89,668 99,113 -9.5%

Equipment Revenues 6,769 6,861 -1.3% 21,084 26,025 -19.0%

Fixed Line Revenues 3,108 2,930 6.1% 12,003 10,835 10.8%

EBITDA 11,669 13,725 -15.0% 48,137 56,380 -14.6%

% total revenues 38.5% 40.9% 38.9% 41.3%

EBIT 8,864 11,360 -22.0% 36,992 45,803 -19.2%

% 29.3% 33.8% 29.9% 33.6%

*Revenues reflect eliminations derived from both the overlap of fixed and mobile operations as well as international intercompany transactions. Total revenues include other income.

Argentina Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands)(1) 21,494 21,894 -1.8%

Postpaid 8,430 8,448 -0.2%

Prepaid 13,065 13,446 -2.8%

MOU 89 77 15.3%

ARPU (ARP) 306 257 19.2%

Churn (%) 1.3% 1.9% (0.5)

Revenue Generating Units (RGUs)* 1150 781 47.3%

*Fixed Line, Broadband and Television. (1) Hybrid subscribers are now included in our postpaid figures. Brazil

Claro continued to lead market growth in the postpaid segment as net adds for the fourth quarter came in just shy of two million, taking our postpaid base to 35.6 million subs, a 29.6% increase year-on-year. In the prepaid segment, we registered net gains of 1.2 million after several quarters of subscriber disconnections. Altogether we ended the year with 63.1 million wireless subscribers, 15.9% more than a year before. Claro maintained a positive balance from Mobile Number Portability. On the fixed-line platform we had net disconnections of 304 thousand units in the fourth quarter, of which 183 thousand were PayTV services and 119 thousand fixed-voice accesses. In an effort to improve customer loyalty and leveraging on the advantages of our convergent platforms, Claro has been focusing on sales of our Combo Multi, integrating our fixed and mobile services.

Fourth quarter revenues topped ten billion reais rising 1.9% annually, with service revenues growing 0.4%. Mobile service revenues continued to show solid performance, expanding 7.9%, with postpaid service revenues increasing 9.7%.Fixed-line service revenues declined 5.0% following a contraction of PayTV revenues, -12.8%, and voice revenues, -17.4%, that was not fully offset by the 9.7% increase in broadband service revenues resulting from upselling of speeds and bandwidth. Postpaid mobile services are our most important source of revenues, followed by fixed-broadband services.

Fourth quarter EBITDA, 4.1 billion reais, was up 8.0% year-on-year as our EBITDA margin hit a record high of 40.4%, 2.3 percentage points higher than a year before. We are focused on increasing operating efficiencies through synergies, cost savings and digitalization.

In the fourth quarter we launched “Claro Box TV”, a streaming device with remote voice control, self-installation and lower operational costs. It is a modern alternative product in terms of content and entertainment that can enhance our commercial offers. In addition, we are adding sports-oriented content to reinforce our offer and maintain our leadership.

We launched a set of products for corporate clients like Multicloud Solutions and some Home Office solutions among others. We aim to keep expanding in the ICT sector with data, internet, managed solutions and mobility. Embratel is the only telecom operator ranked among the 10 big players in this segment.

INCOME STATEMENT - Brazil Proforma Millions of BrL

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Total Revenues* 10,075 9,883 1.9% 39,193 38,590 1.6%

Total Service Revenues 9,573 9,539 0.4% 37,850 37,391 1.2%

Wireless Revenues 4,788 4,320 10.8% 17,756 16,140 10.0%

Service Revenues 4,300 3,987 7.9% 16,468 15,008 9.7%

Equipment Revenues 488 333 46.5% 1,289 1,132 13.9%

Fixed Line Revenues 5,273 5,552 -5.0% 21,382 22,383 -4.5%

EBITDA 4,073 3,771 8.0% 15,542 14,385 8.0%

% total revenues 40.4% 38.2% 39.7% 37.3%

EBIT - 961 1,415 32.0% 5,515 5,546 -0.5%

% 9.5% 14.3% 14.1% 14.4%

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 63,140 54,488 15.9%

Postpaid 35,642 27,491 29.6%

Prepaid 27,498 26,997 1.9%

MOU(1) 183 161 14.0%

ARPU (BrL) 24 20 18.5%

Churn (%) 3.4% 5.7% (2.2)

Revenue Generating Units (RGUs)* 32,648 34,048 -4.1%

*Fixed Line, Broadband and Television. (1) We modified the methodology for calculating MOUs. We no longer include M2M subscribers. Colombia

We obtained 201 thousand postpaid additions in the quarter, twice as many as in the same quarter of 2019 and a record high since 1Q11. In the prepaid segment we gained 784 thousand subs for a combined total of 985 thousand net subscriber additions. Fixed-line RGUs increased by 162 thousand units including 92 thousand broadband accesses—70 thousand of them under MINTIC programs—and 33 thousand PayTV units.

Fourth quarter revenues were up 6.6% year-on-year to 3.6 trillion Colombian pesos with service revenues rising 9.0% reflecting solid revenue growth on both the fixed-line and the mobile platforms. On the mobile one service revenues expanded 6.0% driven by postpaid revenues that increased 7.4%, with prepaid revenues growing 3.5% in a very competitive environment that includes a new entrant. On the fixed-line platform service revenue growth accelerated to 13.9%, up from 10.6% in the prior quarter, on the back of 20.9% broadband revenue growth and the sustained expansion of revenues coming from corporate networks and Pay TV services, up 15.4% and 12.9%, respectively.

Fourth quarter EBITDA rose 7.7% from the year-earlier quarter to 1.6 trillion Colombian pesos. The EBITDA margin, 43.6%, was 50 basis points higher than that of the previous year.

Since December 2019, after being granted additional spectrum in the 700MHz and the 2.5GHz frequencies, we have executed a roll-out of the latest technologies to improve our coverage and capacity to provide the best customer experience. The strength of our network allowed us to meet the demands of our clients for working remotely, homeschooling, getting information or medical attention in the course of the pandemic and we remain very supportive to keep Colombia connected. We have reinforced our digital channels, our customer service centers, call centers and agents, to ensure that we remain the top choice of our clients. INCOME STATEMENT - Colombia Billions of COP

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Total Revenues* 3,574 3,354 6.6% 13,303 12,655 5.1%

Total Service Revenues 2,760 2,533 9.0% 10,593 9,752 8.6%

Wireless Revenues 2,439 2,374 2.7% 9,093 8,826 3.0%

Service Revenues 1,679 1,584 6.0% 6,507 6,072 7.2%

Equipment Revenues - 760 790 -3.8% 2,586 2,755 6.1%

Fixed Line Revenues 1,102 962 14.5% 4,118 3,756 9.6%

EBITDA 1,558 1,446 7.7% 5,731 5,497 4.3%

% 43.6% 43.1% 43.1% 43.4%

EBIT 898 901 -0.3% 3,281 3,235 1.4%

% 25.1% 26.9% 24.7% 25.6%

*Revenues reflect eliminations derived from both the overlap of fixed and mobile operations as well as international intercompany transactions. Total revenues include other income.

Colombia Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers* (thousands) 33,009 31,104 6.1%

Postpaid 7,765 7,351 5.6%

Prepaid 25,244 23,753 6.3%

MOU(1) 317 293 8.1%

ARPU (COP) 17,407 17,252 0.9%

Churn (%) 4.4% 4.8% (0.4)

Revenue Generating Units (RGUs)** 8,318 7,613 9.3%

*Due to differences in the policy for accounting active subscribers, the figures in this report are different from those published by the Ministry of Communications of Colombia (MinTIC). **Fixed Line, Broadband and Television. (1) We modified the methodology for calculating MOUs. We no longer include M2M subscribers. Chile

Fourth quarter revenues declined 3.8% year-on-year as service revenues came down 5.7%, slowing their rate of decline relative to the prior quarter, -7.2%. The improvement stems from the fixed-line segment where service revenues rose 0.6% after at least four quarters of declines. Broadband service revenues increased 9.5% whereas PayTV revenues were up 2.6% following several quarters of contractions. We launched in December our IPTV product that enhances the value of our broadband offering. On the mobile segment service revenues dropped 10.5% in the midst of aggressive competition and pricing pressure.

The contraction in revenues led to a 23.8% decrease in EBITDA to 44.7 billion Chilean pesos, with the EBITDA margin falling to 22.0%. INCOME STATEMENT - Chile Millions of ChPL

4Q20 4Q19(1) Var.% Jan-Dec 20 Jan-Dec 19(1) Var.%

Total Revenues* 203,138 211,071 -3.8% 777,520 835,024 -6.9%

Total Service Revenues 161,990 171,730 -5.7% 644,838 682,766 -5.6%

Wireless Revenues 127,580 136,939 -6.8% 484,713 530,056 -8.6%

Service Revenues 87,441 97,648 -10.5% 353,709 379,221 -6.7%

Equipment Revenues - 40,139 39,291 2.2% 131,004 150,835 13.1%

Fixed Line Revenues 74,549 74,082 0.6% 291,129 303,545 -4.1%

EBITDA - 44,690 58,644 -23.8% 167,383 190,154 12.0%

% total revenues 22.0% 27.8% 21.5% 22.8%

EBIT -10,924 6,874 -258.9% -49,663 -79,078 37.2%

% -5.4% 3.3% -6.4% -9.5%

Chile Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 6,435 6,873 -6.4%

Postpaid 2,381 2,246 6.0%

Prepaid 4,054 4,627 -12.4%

MOU 189 171 10.5%

ARPU (ChP) 4,906 5,690 -13.8%

Churn (%) 7.2% 6.6% 0.6

Revenue Generating Units (RGUs)* 1,377 1,400 -1.6%

*Fixed Line, Broadband and Television. Ecuador

We gained 281 thousand prepaid subscribers in the fourth quarter but also registered net disconnections of 174 thousand postpaid subscribers on account of their not having paid their bills after the grace period available during the emergency face of the pandemic. Most of them have become prepaid clients.

Revenues for the quarter declined 21.6% to 261 million dollars with service revenues falling 12.4%. Mobile service revenues were down 14.6%, mostly on account of postpaid revenues dropping 21.4%, but with prepaid revenues also falling 4.2% in a difficult economic and competitive environment. In the fixed-line segment service revenues increased 11.4% annually on the back of broadband revenues that rose 16.5% and corporate network revenues that, although small, increased 34.7%. We are seeing good adoption of our fixed-line products as we deploy fiber networks in new areas.

Following the revenue decline, EBITDA for the period dropped 23.1% to 112 million dollars. The EBITDA margin stood at 43.0%, practically unchanged from a year before. INCOME STATEMENT - Ecuador Millions of Dollars

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Total Revenues* 261 334 -21.6% 1,077 1,321 -18.5%

Total Service Revenues 238 272 -12.4% 981 1,098 -10.6%

Wireless Revenues 234 305 -23.1% 970 1,222 -20.6%

Service Revenues 213 249 -14.6% 880 1,010 -12.8%

Equipment Revenues 22 56 -61.4% 90 212 -57.6%

Fixed Line Revenues 26 23 9.4% 105 92 13.9%

EBITDA 112 146 -23.1% 495 573 -13.5%

% total revenues 43.0% 43.8% 46.0% 43.4%

EBIT 57 90 -36.7% 274 347 -21.0%

% 21.9% 27.1% 25.4% 26.2%

*Revenues reflect eliminations derived from both the overlap of fixed and mobile operations as well as international intercompany transactions. Total revenues include other income.

Ecuador Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 7,929 8,493 -6.6%

Postpaid 2,005 2,675 -25.1%

Prepaid 5,925 5,818 1.8%

MOU 379 433 -12.4%

ARPU (US$) 9 10 -8.1%

Churn (%) 4.2% 4.2% 0.0

Revenue Generating Units (RGUs)* 420 446 -5.8%

*Fixed Line, Broadband and Television. Peru

We finished December with 10.9 million wireless subscribers after adding 396 thousand wireless subscribers in the quarter–the highest figure in nearly eight years–including 223 thousand postpaid subscribers.

Fourth quarter revenues reached 1.5 billion soles, 8.0% more than a year before, with service revenues increasing 8.3%, expanding on both the fixed and the mobile platforms.

Mobile service revenue growth accelerated to 4.9% year-on-year from -0.1% in the precedent quarter with prepaid revenues up 14.2%. We booked extraordinary revenues from government aid directed at achieving greater connectivity for education purposes. Fixed-line service revenues shot up 19.5% on the back of a 45.0% expansion in broadband revenues.

The solid expansion in service revenues, along with financial and commercial discipline and a reduction in bad debt provisions, resulted in EBITDA jumping 33.6% to 547 million soles. The EBITDA margin, 37.1%, was 7.1 percentage points higher than in the year-earlier quarter. INCOME STATEMENT - Peru Millions of Soles

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Total Revenues* 1,476 1,367 8.0% 5,069 5,200 -2.5%

Total Service Revenues 1,028 949 8.3% 3,932 3,737 5.2%

Wireless Revenues 1,183 1,139 3.8% 4,059 4,316 -6.0%

Service Revenues 767 730 4.9% 2,967 2,891 2.6%

Equipment Revenues 416 408 1.9% 1,092 1,425 -23.4%

Fixed Line Revenues 261 219 19.5% 965 846 14.1%

EBITDA 547 409 33.6% 1,773 1,510 17.4%

% total revenues 37.1% 29.9% 35.0% 29.0%

EBIT 249 134 85.8% 684 488 40.1%

% 16.9% 9.8% 13.5% 9.4%

*Revenues reflect eliminations derived from both the overlap of fixed and mobile operations as well as international intercompany transactions. Total revenues include other income.

Peru Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 10,948 11,611 -5.7%

Postpaid 4,215 4,149 1.6%

Prepaid 6,733 7,462 -9.8%

MOU 394 287 37.2%

ARPU (Sol) 24 21 13.4%

Churn (%) 3.6% 5.0% (1.4)

Revenue Generating Units (RGUs)* 1,739 1,603 8.5%

*Fixed Line, Broadband and Television. Central America

Our operations in Central America added 511 thousand wireless subscribers in the quarter, all of them prepaid, while on the fixed-line segment we gained 19 thousand broadband accesses and 11 thousand PayTV units, but disconnected 10 thousand voice lines.

Revenues totaled 577 million dollars, 5.5% less a year before, with service revenues declining 2.5% in dollar terms. Mobile service revenues were down 3.0% in the quarter, compared to -6.9% in the prior quarter, as prepaid revenues recovered alongside greater mobility of our subscribers: they were up 2.8% after several quarters of declines. The reduction in postpaid revenues, -9.4%, was in line with that of the precedent quarter. On the fixed-line segment service revenues showed a slight improvement declining from -2.6% in the third quarter to -1.4% in the fourth, supported by broadband revenues that increased 6.9% and a recovery in revenues from corporate networks, up 4.5% in the quarter.

In spite of the revenue reduction, EBITDA rose 7.5% annually to 240 million dollars. The EBITDA margin, 41.7%, rose five percentage points from a year before. All countries with the exception of Panama posted EBITDA growth in the quarter. INCOME STATEMENT - Central America Proforma Millions of Dollars

4Q20 4Q19(1) Var.% Jan-Dec 20 Jan-Dec 19(1) Var.%

Total Revenues* 577 610 -5.5% 2,244 2,435 -7.8%

Total Service Revenues 512 525 -2.5% 2,012 2,098 -4.1%

Wireless Revenues - 386 414 -6.9% 1,489 1,654 10.0%

Service Revenues 333 344 -3.0% 1,296 1,367 -5.2%

Equipment Revenues - 52 71 -25.8% 193 287 32.8%

Fixed Line Revenues 184 189 -2.8% 738 760 -3.0%

EBITDA 240 224 7.5% 891 908 -1.8%

% total revenues 41.7% 36.7% 39.7% 37.3%

EBIT - 32 84 -62.3% 226 336 32.7%

% 5.5% 13.8% 10.1% 13.8%

Central America Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 15,044 15,488 -2.9%

Postpaid 2,283 2,529 -9.7%

Prepaid 12,761 12,959 -1.5%

MOU(1) 186 168 11.2%

ARPU (US$) 8 8 0.8%

Churn (%) 5.4% 6.6% (1.1)

Revenue Generating Units (RGUs)* 4,247 4,409 -3.7%

*Fixed Line, Broadband and Television. Figures have been adjusted in accordance with the methodolgy used for all AMX operations. (1) We modified the methodology for calculating MOUs. We no longer include M2M subscribers. Caribbean

In the fourth quarter our operation in Dominicana added 144 thousand wireless subscribers, 46% more than a year before, of which 134 thousand were prepaid subscribers. Puerto Rico gained 41 thousand wireless subscribers in the quarter compared to only seven thousand in the year-earlier quarter.

Revenues were up 2.4% in Dominicana as service revenues rose 4.0% year-on-year. On the mobile platform, service revenues increased 5.7% on the back of prepaid revenues that were up 11.2%. On the fixed-line one, after three consecutive quarters of declines, service revenues increased 1.7% on the back of an 18.3% increase in broadband revenues. Revenue growth along with strict cost controls brought about a 9.3% EBITDA increase, with the EBITDA margin expanding 3.1 percentage points relative to the year-earlier quarter. In Puerto Rico, fourth quarter revenues remained solid, increasing 10.7% year-on-year as service revenues grew 8.3%. On the mobile platform we registered service revenue expansion of 14.8% mostly coming from postpaid. We continued to funnel through Claro government aid in form of data services directed at students and teachers. On the fixed-line segment service revenues were 0.9% higher than a year before after seven quarters of declines.

EBITDA for the period doubled compared to the last quarter of 2019, as the EBITDA margin rose nearly ten percentage points.

INCOME STATEMENT - Caribbean Millions of Dollars

4Q20 4Q19(1) Var.% Jan-Dec 20 Jan-Dec 19(1) Var.%

Total Revenues* 458 453 1.0% 1,736 1,795 -3.3%

Total Service Revenues 389 389 0.0% 1,516 1,581 -4.1%

Wireless Revenues 282 279 1.2% 1,059 1,069 -0.9%

Service Revenues 222 215 3.3% 853 855 -0.3%

Equipment Revenues 60 64 -5.9% 206 214 -3.6%

Fixed Line Revenues 170 177 -3.6% 676 737 -8.4%

EBITDA 164 138 18.4% 587 579 1.5%

% total revenues 35.8% 30.5% 33.8% 32.2%

EBIT 81 55 48.7% 260 252 2.8%

% 17.7% 12.1% 14.9% 14.1%

Caribbean Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 6,422 6,244 2.9%

Postpaid 2,066 2,028 1.8%

Prepaid 4,357 4,216 3.3%

MOU(1) 215 203 6.0%

ARPU (US$) 12 12 1.2%

Churn (%) 3.3% 3.5% -0.2

Revenue Generating Units (RGUs)* 2,558 2,528 1.2%

*Fixed Line, Broadband and Television. (1) We modified the methodology for calculating MOUs. We no longer include M2M subscribers. United States

Following net disconnections of 194 thousand in the fourth quarter we ended the year with 20.7 million subscribers. Although we have taken measures to ensure subscriber retention in a very competitive environment, gross additions were below prior quarters partly as a result of lower spend capacity in our addressable market. Our fourth quarter revenues, 2.1 billion dollars, were 2.6% higher than a year before with service revenues up 2.5%. ARPU was 3.7% higher than a year before at 28 dollars.

Fourth quarter EBITDA came in at 285 million dollars, 52.7% above the year-earlier quarter. The EBITDA margin was equivalent to 13.4% of revenues, up from 9.0% a year before.

INCOME STATEMENT - United States Millions of Dollars

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Total Revenues 2,125 2,071 2.6% 8,241 8,091 1.9%

Service Revenues 1,760 1,718 2.5% 6,946 6,821 1.8%

Equipment Revenues 364 352 3.3% 1,294 1,269 2.0%

EBITDA 285 186 52.7% 983 646 52.0%

% total revenues 13.4% 9.0% 11.9% 8.0%

EBIT 267 169 57.8% 910 574 58.6%

% 12.6% 8.2% 11.0% 7.1%

United States Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 20,682 20,876 -0.9%

Straight Talk 9,604 9,382 2.4%

SafeLink 2,035 2,173 -6.3%

Other Brands 9,043 9,321 -3.0%

MOU 666 594 12.0%

ARPU (US$) 28 27 3.7%

Churn (%) 3.5% 4.2% (0.7)

A1 Telekom Austria Group

A growing number of new COVID-19 infections prompted almost all governments in our footprint to impose certain lockdown measures from November 2020. Our operations were well prepared and adjusted well to the new conditions. We have worked to improve the operational efficiencies to absorb the negative impact from lower roaming revenues and handset sales.

Our mobile base ended the year at 21.9 million rising 2.7% year on year. Postpaid subscribers were up in almost every market driven by the strong demand for mobile WiFi routers. On the fixed line platform, RGUs came down 1.6% driven by the decline in voice lines in Austria and Croatia. In the rest of the CEE markets RGUs rose on the back of broadband and PayTV units. Total revenues came down 1.2% with service revenues remaining flat in spite of a sharp decline in roaming revenues and the depreciation of the Belarussian ruble. Adjusting for the aforementioned effects, service revenues would have increased 2.5%. In Austria, service revenues increased 1.0% as the high demand of mobile WiFi routers and the adoption of 5G services and high-value plans more than offset the reduction in roaming losses. In our CEE markets, Bulgaria posted service revenue growth in both the mobile and the fixed platforms whereas in the rest of the markets revenues were affected by the decline in roaming revenues and by foreign exchange losses. Excluding one-offs and the foreign exchange effects, service revenues from our international operations would have grown 5.2%.

Group EBITDA increased 2.5% on the back of operational efficiencies. Adjusted for one-offs and restructuring charges, EBITDA would have grown 5.0% at constant exchange rates. In Austria, EBITDA was up 3.8%. Excluding restructuring charges it increased 4.2%. EBITDA from our international operations was down 1.2% in Euro terms mostly reflecting the depreciation of the Belarussian ruble; Bulgaria Croatia, Serbia and Macedonia registered EBITDA increases.

INCOME STATEMENT (In accordance with IFRS 16) - A1 Telekom Austria Group Millions of Euros

4Q20 4Q19 Var.% Jan-Dec 20 Jan- Dec 19 Var.%

Total Revenues 1,186 1,200 -1.2% 4,549 4,565 -0.3%

Total service revenues 961 963 -0.1% 3,805 3,805 0.0%

Wireless service revenues 517 520 -0.7% 2,071 2,075 -0.2%

Fixed-line service revenues 445 442 0.5% 1,733 1,730 0.2%

Equipment revenues 196 213 -8.1% 659 664 -0.7%

Other operating income 28 25 15.1% 86 96 -10.8%

EBITDA 364 355 2.5% 1,577 1,561 1.0%

% total revenues 30.7% 29.6% 34.7% 34.2%

Adjusted EBITDA(1) 387 377 2.8% 1,661 1,645 1.0%

% total revenues 32.6% 31.4% 36.5% 36.0%

EBIT 129 118 9.6% 639 615 3.9%

% total revenues 10.9% 9.8% 14.0% 13.5%

For further detail please visit www.a1.group/en/investor-relations (1) Does not include restructuring charges in Austria.

A1 Telekom Austria Group Operating Data

4Q20 4Q19 Var.%

Wireless Subscribers (thousands) 21,864 21,288 2.7%

Postpaid 17,822 16,955 5.1%

Prepaid 4,042 4,334 -6.7%

MOU(1) 451 370 21.8%

ARPU (Euros) 8 8 -2.3%

Churn (%) 1.3% 2.0% (0.7)

Revenue Generating Units (RGUs)* 6,050 6,148 -1.6%

*Fixed Line, Broadband and Television. (1) We modified the methodology for calculating MOUs. We no longer include M2M subscribers. Exchange Rates Local Currency Units per MxP 4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Euro End of Period 0.0410 0.0473 -13.3% 0.0410 0.0473 -13.3% Average 0.0406 0.0468 -13.2% 0.0408 0.0464 -12.1%

U.S. End of Period 0.0501 0.0531 -5.5% 0.0501 0.0531 -5.5% Average 0.0484 0.0518 -6.5% 0.0465 0.0519 -10.3%

Brazilean Real End of Period 0.2605 0.2139 21.8% 0.2605 0.2139 21.8% Average 0.2618 0.2133 22.7% 0.2397 0.2047 17.1%

Argentinean Peso End of Period 4.2183 3.1780 32.7% 4.2183 3.1780 32.7% Average 3.8772 3.0777 26.0% 3.2868 2.5015 31.4%

Chilean Peso End of Period 35.6389 39.7311 -10.3% 35.6389 39.7311 -10.3% Average 36.8739 39.1008 -5.7% 36.8512 36.4754 1.0%

Colombian Peso End of Period 172.0664 173.8979 -1.1% 172.0664 173.8979 -1.1% Average 177.4269 176.6557 0.4% 171.8683 170.3195 0.9%

Guatemalan Quetzal End of Period 0.3907 0.4085 -4.4% 0.3907 0.4085 -4.4% Average 0.3774 0.4001 -5.7% 0.3594 0.3996 -10.1%

Peruvian Sol End of Period 0.1817 0.1760 3.2% 0.1817 0.1760 3.2% Average 0.1746 0.1743 0.2% 0.1627 0.1733 -6.1%

Dominican Republic Peso End of Period 2.9275 2.8235 3.7% 2.9275 2.8235 3.7% Average 2.8308 2.7428 3.2% 2.6554 2.6765 -0.8% Exchange Rates Local Currency Units per USD

4Q20 4Q19 Var.% Jan-Dec 20 Jan-Dec 19 Var.%

Euro End of Period 0.8186 0.8918 -8.2% 0.8186 0.8918 -8.2% Average 0.8384 0.9031 -7.2% 0.8761 0.8933 -1.9% Mexican Peso End of Period 19.9487 18.8452 5.9% 19.9487 18.8452 5.9% Average 20.6420 19.2926 7.0% 21.4860 19.2641 11.5% Brazilean Real End of Period 5.1967 4.0307 28.9% 5.1967 4.0307 28.9% Average 5.4031 4.1148 31.3% 5.1508 3.9438 30.6% Argentinean Peso End of Period 84.1500 59.8900 40.5% 84.1500 59.8900 40.5% Average 80.0335 59.3759 34.8% 70.6203 48.1899 46.5% Chilean Peso End of Period 710.9500 748.7400 -5.0% 710.9500 748.7400 -5.0% Average 761.1529 754.3568 0.9% 791.7846 702.6654 12.7% Colombian Peso End of Period 3,432.5000 3,277.1400 4.7% 3,432.5000 3,277.1400 4.7% Average 3,662.4531 3,408.1473 7.5% 3,692.7591 3,281.0504 12.5% Guatemalan Quetzal End of Period 7.7938 7.6988 1.2% 7.7938 7.6988 1.2% Average 7.7905 7.7186 0.9% 7.7220 7.6986 0.3% Peruvian Sol End of Period 3.6240 3.3170 9.3% 3.6240 3.3170 9.3% Average 3.6046 3.3628 7.2% 3.4966 3.3382 4.7% Dominican Republic Peso End of Period 58.4000 53.2100 9.8% 58.4000 53.2100 9.8% Average 58.4342 52.9148 10.4% 57.0548 51.5599 10.7% Glossary of Terms

ARPU Average Revenue per User. The ratio of service revenues in a given period to the average number of wireless subscribers in the same period. It is presented on a monthly basis. ARPM Average Revenue per Minute. The ratio of service revenues to airtime traffic. Capex Capital Expenditure. Accrued capital expenditures related to the expansion of the telecommunications infrastructure. Churn Disconnection Rate. The ratio of wireless subscribers disconnected during a given period to the number of wireless subscribers at the beginning of that period. EBIT Earnings Before Interest and Taxes, also known as Operating Profit. EBIT margin The ratio of EBIT to total operating revenue. EBITDA Earnings Before Interest, Taxes, Depreciation, and Amortization. EBITDA The ratio of EBITDA to total operating revenue. margin EPS Earnings per share. Total earnings in Mexican pesos divided by total shares. (Mexican pesos) Earnings per Total earnings in U.S. dollars divided by total ADRs equivalent. ADR (US$) Gross Total number of subscribers acquired during the period. additions Licensed Licensed population. Population covered by the licenses that each of the companies manage. pops LTE Long-term evolution is a 4th generation standard for wireless communication of high-speed data for mobile phones and data terminals. Market share A company’s subscriber base divided by the total number of subscribers in that country. MBOU Megabytes of Use per subscriber. The ratio of wireless data in a given period to the average number of wireless subscribers in that same period. It is presented on a monthly basis. MOU Minutes of Use per subscriber. The ratio of wireless traffic in a given period to the average number of wireless subscribers in that same period. It is presented on a monthly basis. Net The difference in the subscriber base from one period to another. It is the different between gross additions and disconnections. subscriber additions Net debt Total short and long term debt minus cash and marketable securities. Net debt / The ratio of total short and long term debt minus cash and securities to trailing 12-month income before interest, taxes, depreciation and EBITDA amortization. Prepaid Subscriber that may purchase airtime to recharge a cellular phone. The client does not hold a contract with the company for voice and data services. Postpaid Subscriber that has a contract for the use of airtime. The client has no need of activating airtime, it is done so immediately. SMS Short Message Service. SAC Subscriber Acquisition Cost. The sum of handset subsidies, marketing expenses and commissions to distributors for handset activation. Handset subsidy is calculated as the difference between equipment cost and equipment revenues. Wireless The ratio of total wireless subscribers in any given country divided by the total population in that country. penetration SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: February 11, 2021 AMÉRICA MÓVIL, S.A.B. DE C.V.

By: /s/ Carlos José García Moreno Elizondo Name: Carlos José García Moreno Elizondo Title: Chief Financial Officer